final FormConfiguration formConfiguration = new FormConfiguration();
formConfiguration.setName("Form");
final AddCustomColumnDescriptorForm form = new AddCustomColumnDescriptorForm(formConfiguration, formView, complexListConfiguration.getClas(), ComplexListActivity.this);
final PSimplePanel windowContent = new PSimplePanel();
form.start(windowContent);
PConfirmDialog.show("Add custom column", windowContent, "Ok", "Cancel", new PConfirmDialogHandler() {
@Override
public boolean onOK(final PDialogBox dialogBox) {
if (form.isValid()) {
final Class<?> fieldType = form.getFieldType();